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Search: id:A131682
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A131682 a(n) = (n^1 + 1!)*(n^2 + 2!)*(n^3 + 3!)/3!. +0
2
2, 7, 42, 242, 1050, 3537, 9842, 23732, 51282, 101675, 188122, 328902, 548522, 878997, 1361250, 2046632, 2998562, 4294287, 6026762, 8306650, 11264442, 15052697, 19848402, 25855452, 33307250, 42469427, 53642682, 67165742, 83418442, 102824925, 125856962 (list; graph; listen)
OFFSET

0,1

FORMULA

G.f.: -(2-7*x+35*x^2+25*x^3+63*x^4+2*x^5)/(-1+x)^7. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 14 2007

CROSSREFS

See A049614.

Sequence in context: A084871 A122942 A109172 this_sequence A038052 A066383 A007065

Adjacent sequences: A131679 A131680 A131681 this_sequence A131683 A131684 A131685

KEYWORD

nonn

AUTHOR

Alexander Povolotsky (pevnev(AT)juno.com), Aug 29 2007

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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